body 
{
    overflow: hidden;
}

#viewport {
	position : absolute;
	top:0;
	left:0;	
	width: 100%;
	height : 100%;
	overflow: hidden;
	background-color:black;
	background-image: url(img/fog.png);
}

#shadow 
{
	background-color:black;
	z-index:10;
	position:absolute;
	width:100%;
	height:100%;
	top:0px;
}